新上线

年龄计算器

精确计算你的年龄（年、月、日）。查看已活天数、周数以及距下一个生日的天数。

输入您的出生日期和可选的目标日期来计算您的确切年龄

您的年龄
选择您的出生日期进行计算
年龄根据日历日期计算。目标日期默认为今天，但可以更改为任何时间点。

How to Use This Tool

  1. 1

    Enter your date of birth

    Use the date picker to select your birth date. The format follows your browser's locale settings.

  2. 2

    Optionally change the target date

    By default the target date is today. Change it to calculate age at any specific date in the past or future.

  3. 3

    View your exact age

    The calculator displays your age in years, months, and days, along with total days, weeks, and months lived.

  4. 4

    Check your next birthday

    See how many days remain until your next birthday countdown, displayed automatically below the result.

Frequently Asked Questions

How does the age calculator determine exact age?
It computes the difference between the birth date and target date accounting for varying month lengths and leap years, giving you precise years, months, and days.
Can I calculate age between two arbitrary dates?
Yes. Change both the birth date and target date fields to compute the elapsed time between any two dates, not just from birth to today.
Does this tool account for leap years?
Absolutely. The calculation correctly handles leap years and months with different numbers of days to ensure accurate results.
How is the next birthday countdown calculated?
It finds the next occurrence of your birth month and day after the target date and counts the remaining calendar days.